Divided mold



June 26, 1928. Y I '1,674,996

C. E. SCHMUNK DIVIDED MoL Filed June 2.6, 1924 2 Sheets-Sheet l June 26, 1928.

. E. scHMUNK DIVIDED MOLD Filed June 26, 1924 2 Sheets-Sheet 2 INVENTOR Patented June 26, 1928.

UNITED STATES CHARLES E'. SCHMUNK, OF GRAFTON, PENNSYLVANIA.

DIVIDED MOLD.

Application filed June 26,

This invention isfor a divided mold particularly adapted for molding glassware.

The invention has for its principal object to provide an entirely automatic divided mold, Where-in the parts Will be irmly held together during the pressing operation and which will automatically open without manual intervention to discharge the pressed Ware.

The invention has for its further objects to provide a divided mold which may be readily used in automatic machines of the type now in use, in which plain molds are used, and to provide a mold wherein mold sections may be easily and readily replaced and changed, and which may be readily adapted to the use of different numbers of mold parts.

Other objects ofv the invention are to pro- Videla mold operating mechanism of simple construction and in which all parts will be subjected to substantially uniform Wear.

The invention may be readily understood by reference to lthe accompanying:drawings, in which: l

F ig. 1 represents a' vertical section through theimoldand operating: mechanism when the mold-isclosed, and the pressingplunger is at the downwardwli-mit of its movement;

Fig. 2is atop plan View of the mold, with the plunger -andupper plate removed;

Fig. 3 is a section similar to Fig. 1, showing the moldy opened out with the finished Wareready for removal; and` Fig. 4 is al vie`w similar to Fig. 2, but showing h'oW a tvvoipart mold may be substitutedy for' the four-part one of Fig. 2.

rFhe'mold'may be adapted for use in any ofv the' various` types of automaticv pressing machines vnow in'Wide-use, and which generally comprises a rotary table on' which several mold units are carried: Suchmachines being oldv and Wellknown in theartfl have shown only themolditogether Withisiich parts of the machine as support and operate it.

In the-drawings, 5 designates the usual moldcarrier or' supportingtable of such an automatic machine. Securedover an opening 6 in theta-ble is abed-plateor ringz?. On the ring 7, at suitably placed intervals, are pairs off upwardly extending lugs or ears 8.r I' have Sho-Wn four such pairs of ears.

Secured between each pair of ears, on a p-ivotor-prin 9passingthrough theears, is a mold part' carry-ing? member 10, which is 1924. Serial No. 722,502.

substantiallv a bell crank, having a vertical arm 11 land a horizontal extension. 12, the horizontal extension being directed toward the center of opening 6.

On each horlzontal extension is an arcuate row of teeth 13, the extension being generally similar to a segment of a gear Wheel. Secured to each pivoted mold part carrying member is a mold part 14. I have shown such part as being secured by a bolt 15 passing through the upright arm oit the pivoted carrier. By this arrangement, in` tercliangeable molds may be used, and the machine readilyy changed to receive molds for making different shapes and sizes of articles.

Depending'Y from the ,table below the opening 6 is a ,tubular guide 1G, Within which is a vertically reciprocable rod or plunger 17, generally similar to that Ynow employed in machines of this class, -buthaving annular or other suitably, formed rack teeth 18 on its upper end, which mesh with the teeth 13 on v.the segment-like extensions '12 of the carriers 10. Bernovably set in the top Iof this plunger the usual interchangeable mold bottom 19. 4 .j

A caln roller 20 may be provided on the end of a pin 21 carried vby plunger 17 and projecting throughva slot 22 in the tubular guid 1 6. Thiscain roller is adapted to engage the usual stationary cam A, generally VprovidedAonmachines ofthis kind for raising 4the plunger-.and 'holding' it in eleva-ted vposition.-` seeond cani `B may be. provided at a sui-tablepoint in the path' of travel of the mold forur ingthe plunger down, to

insure closing `o the mold. The cam and cam mechanism are no part of the present inventiom and are merely referred' to in order that the operation of the mold may be clearly understood.

The press-ingplunger is designated C,and, in Fig. 1, is shown? centered in the mold. Associated with the'plunger is acap. plate D that is lowered in advance of thel plunger, and which isrecessed to receive the upper ends of the mold parts.

It will `be. noted that the construction of the gear segmenton each carrying member is such as to engage the ring 7 and prevent the upright'extension 11 of the member 'from swinging inwardly past vertical position.

In'. operation, the' upward movement of the lower plunger 17 is effected after the pressing plunger has completed its Work and has withdrawn from the mold.Y As the bottomplunger" moves up, the mold sections, by reason of rack teeth on the plunger-being engaged in the gear segments, are opened out to the position shown in Fig. 3, while the completed Ware a" is elevated withitheV spreading during'the pressing operation.

' If a two-part mold is to be used instead of a four-part mold, an opposing two of the mold part carriers 10 are removed, and a mold part '14 of the desired kind is mounted on each of the remaining two'carriers, as shown in Fig. 4.

Should a three-part mold be desired, a different ring 7 would have to be used, with the pairs of ears appropriately spaced. This would be true also of a five-part mold.

It will be seen that the mold parts are all moved in absolute synchronism, andl that the wear will be substantially equal in each. Repairs can be quickly made, as can the interchange of molds. Various changes and modifications may be made in the construction1 shown, within thecontemplation of my invention and under the scope of the appended claims.

l claim as rmy invention:

l. A divided mold comprising a support, a plurality of mold part carriers piv'otally mounted on the support, each carrier'having a substantially vertical andv lateral extension, a mold part on each carrier, a reciprocable bottom member centrally disposed with respect to the carriers, and means on the lateral extension ofeach carrier operatively connected with said reciprocable bottom member for rocking the carrier on its pivot withv the reciprocation of the bottom member.

2, A divided mold comprising a support, a plurality of mold parts pivotally carried on the support to rock in a vertical plane toward and from each other, a vertically reciprocable operating member below the support, and means operatively connecting the mold parts with the operating member to rock the same upon reciprocatlon lof the operating member. i

3. A divided mold comprising a support, a plurality of mold sections pivotally carried on the support to rock in a vertical plane, each section including a vertically extending mold part and a laterally extending gear segment, a bottom member centrally Vthe support, a reciprocable mem disposed with respect to mold sections, said bottom member having teeththereon opera` tively engaging the gear segments of the mold sectionsl whereby said sections may be rocked upon operation of the bottom member..l

4. A glass mold comprising a support, a plurality of mold part carriers pivotally -mounted on the support to roc-k in a vertical plane, each carrier having a vertically eX- tending part and a laterally extending gearsegment,` a mold "part detachably secured to each carrier, a vertically reciprocable plunger below -the lsupport centrally disposed with vrespect to the carriers and -ha-ving means-at its upper end7 providinga bottom for the mold, said plunger having teeth near its upper' end in mesh with the gear segments of the carrier, whereby the vcarriers are rockedaway from each otheron thegupward movement of the `--bottom plunger'and rocked-toward each other on the downward movement of theabottom plunger.

l5. A glassA molding vdevice comprising a pressing plunger, a support below the press- 'ing plunger, a plurality of :mold sections on the support arranged to rock toward and from each other .inr va Verticalplane, a vertically reciprocable bottom member-centrally disposed with -respectf to the mold sections, operating meansconnecting the bottom member -with the mold sections for rocking the sections toward eachV other' whenv the bottom member moves downwardly, 5whereby pluralityv of cooperatingvertical;'mold sections horizontally pivoted on.the 'support,a

bottom end closurefor the mold, a recipro- -cable element on which the end .closure is carried, means for raising and lowering .the reciprocable element and amechanical operating eonnection between the reciprocable llO element and athe mold sections for opening the latter upon the raising of the former and closing it upon the lowering thereof. 7. A mol-d comprising a support, a plurality of mold parts horizontally ivoted on bottom of the mold .parts centrally `disposed -with respect tothe mold parts, means on-the mold parts cooperating with the said member for effecting aclosingmovement ofl-th'e r at the mold parts when the .said member Amoves l down and opening the mold when the said member moves up, and operating-means .for the said member.

8. A mold comprising a support, a plurality of mold .parts pivotally mounted on the support for movementabout horizontal axes, a reciproeable bottom plunger in the mold, and ooperating means on the mold parts and reciprocable bottom plunger for effecting a pivotal movement of the former upon vertical movement of the latter, Said means swinging the mold parts inwardly upon downward movement of the plunger und swinging them outwardly upon upward movement thereof, and means for operating the plunger.

9. A glass mold including a fixed support, u plurality of mold sections pivotally mounted thereon l'or movement about borizontnl axes, u` reciprocable bottom member for the mold movable up and down between the mold gestions, and cooperating parts on the reeiprocable bottom member and the mold sections for urging the mold sections together when the bottom member moves down, Suid bottom member serving to open the mold sections and lift tbe ware therefrom when it moves up.

10. A mold comprising a fixed support, a plurality of pivoted mold parts thereon, a reeiproceble bottom plunger, automatically operable means includingr cooperating members on the plunger and mold parts :ictuuted by the plunger lor opening and closingr the mold parts upon reeiprocution of the plunger.

In testimony whereof I atlx my signature.

CHARLES E. SCHMUNK. 

